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  <title>向已存在元素后追加数据</title>
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  <div id="layout-content"><div id="memcached.append" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">Memcached::append</h1>
  <p class="verinfo">(PECL memcached &gt;= 0.1.0)</p><p class="refpurpose"><span class="refname">Memcached::append</span> &mdash; <span class="dc-title">向已存在元素后追加数据</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-memcached.append-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>Memcached::append</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$key</code></span>, <span class="methodparam"><span class="type">string</span> <code class="parameter">$value</code></span>): <span class="type">bool</span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>Memcached::append()</strong></span>向已经存在的元素后追加<code class="parameter">value</code>参数对应的字符串值。
   <code class="parameter">value</code>被强制转换成字符串类型主要是因为对于mix类型的追加没有很好的定义。
  </p>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
   <p class="para">
    如果<strong><code>Memcached::OPT_COMPRESSION</code></strong>常量开启，这个操作会失败，并引发一个警告，因为向压缩数据
    后追加数据可能会导致解压不了。
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 parameters" id="refsect1-memcached.append-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">key</code></dt>

     <dd>

      <p class="para">
       用于存储值的键名。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">value</code></dt>

     <dd>

      <p class="para">
       将要追加的值。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-memcached.append-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>true</code></strong>， 或者在失败时返回 <strong><code>false</code></strong>。
   如果key不存在，<span class="methodname"><a href="memcached.getresultcode.html" class="methodname">Memcached::getResultCode()</a></span>将返回<strong><code>Memcached::RES_NOTSTORED</code></strong>。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-memcached.append-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-4382">
    <p><strong>示例 #1 <span class="function"><strong>Memcached::append()</strong></span>示例</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$m&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">Memcached</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$m</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">addServer</span><span style="color: #007700">(</span><span style="color: #DD0000">'localhost'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">11211</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$m</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">setOption</span><span style="color: #007700">(</span><span style="color: #0000BB">Memcached</span><span style="color: #007700">::</span><span style="color: #0000BB">OPT_COMPRESSION</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">false</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$m</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">set</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'abc'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$m</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">append</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'def'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$m</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">get</span><span style="color: #007700">(</span><span style="color: #DD0000">'foo'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
string(6) &quot;abcdef&quot;
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-memcached.append-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="memcached.appendbykey.html" class="methodname" rel="rdfs-seeAlso">Memcached::appendByKey()</a> - 向指定服务器上已存在元素后追加数据</span></li>
    <li class="member"><span class="methodname"><a href="memcached.prepend.html" class="methodname" rel="rdfs-seeAlso">Memcached::prepend()</a> - 向一个已存在的元素前面追加数据</span></li>
   </ul>
  </p>
 </div>


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